Finding the Fourth Proportional to 121,630.18, 167,849.58 and 67,915.17
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Solution
The fourth proportional to 121,630.18, 167,849.58 and 67,915.17 is: 93,722.90
Step by Step Solution
- Step 1: Write the proportion equation
121,630.18 : 167,849.58 = 67,915.17 : x - Step 2: Convert to fraction form
121,630.18/167,849.58 = 67,915.17/x - Step 3: Cross multiply
121,630.18x = 167,849.58 × 67,915.17 - Step 4: Simplify right side
121,630.18x = 11,399,532,760.13 - Step 5: Solve for x
x = 11,399,532,760.13/121,630.18 - Step 6: Final answer
x = 93,722.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.